Iec 60371 3 9 1995 amd1 2007

untitled INTERNATIONAL STANDARD IEC 60371 3 9 1995 AMENDMENT 1 2007 04 Amendment 1 Insulating materials based on mica – Part 3 Specifications for individual materials – Sheet 9 Moulding micanite Refer[.]

INTERNATIONAL STANDARD

IEC 60371-3-9

1995 AMENDMENT 1

2007-04

Amendment 1

Insulating materials based on mica – Part 3:

Specifications for individual materials – Sheet 9: Moulding micanite

Reference number IEC 60371-3-9 Amend 1:2007(E)

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INTERNATIONAL STANDARD

IEC 60371-3-9

1995 AMENDMENT 1

2007-04

Amendment 1

Insulating materials based on mica – Part 3:

Specifications for individual materials – Sheet 9: Moulding micanite

D

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Commission Electrotechnique Internationale International Electrotechnical Commission Международная Электротехническая Комиссия

– 2 – 60371-3-9 Amend 1 © IEC:2007(E)

FOREWORD

This amendment has been prepared by IEC technical committee 15: Solid electrical insulating

materials

The text of this amendment is based on the following documents:

FDIS Report on voting 15/362/FDIS 15/379/RVD

Full information on the voting for the approval of this amendment can be found in the report

on voting indicated in the above table

A bilingual version of this publication may be issued at a later date

The committee has decided that the contents of this amendment and the base publication will

remain unchanged until the maintenance result date indicated on the IEC web site under

"http://webstore.iec.ch" in the data related to the specific publication At this date, the

publication will be

• reconfirmed,

• withdrawn,

• replaced by a revised edition, or

• amended

_

Throughout the text, add 60000 to each IEC standard reference number: for example replace

IEC 371-3-2 by IEC 60371-3-2

Page 5

INTRODUCTION

Replace the existing text by the following new text:

This part of IEC 60371 forms part of a series which deals with insulating materials built up

from mica splittings or mica paper, with or without reinforcement, and with mica paper in its

pure state for use in electrical equipment

IEC 60371 consists of three parts under the main title Insulating materials based on mica:

Part 1: Definitions and general requirements

Part 2: Methods of test

Part 3: Specifications for individual materials

This standard contains one of the sheets comprising Part 3:

Sheet 9: Moulding micanite

60371-3-9 Amend 1 © IEC:2007(E) – 3 –

Page 7

1 Scope

Insert the following new text:

Safety warning

It is the responsibility of the user of the methods contained or referred to in this

document to ensure that they are used in a safe manner

Replace the whole of this clause by the following:

The following referenced documents are indispensable for the application of this document

For dated references, only the edition cited applies For undated references, the latest edition

of the referenced document (including any amendments) applies

IEC 60243-1:1998, Electrical strength of insulating materials – Test methods – Part 1: Tests

at power frequencies

IEC 60371-2:2004, Specification for insulating materials based on mica – Part 2: Methods of

test

IEC 60371-3-2:2005, Insulating materials based on mica – Part 3: Specifications for individual

materials – Sheet 2: Mica paper

IEC 60554-3-2:1983, Specification for cellulosic papers for electrical purposes – Part 3:

Specifications for individual materials – Sheet 2: Capacitor paper

IEC 60674-3-2:1992, Specification for plastic films for electrical purposes – Part 3:

Specifications for individual materials – Sheet 2: Requirements for balanced biaxially oriented

polyethylene terephthalate (PET) films used for electrical insulation

Page 9

4.1 Mica splittings

Replace the existing text by the following:

Mica splittings referred to in this specification shall comply with the requirements of

IEC 60371-2

5 Requirements: composition and tolerances

Replace the first paragraph of this subclause by the following new text:

When tested by the method of Clause 7 of IEC 60371-2, the composition of the products shall

lie within the limits given in Table 1

– 4 – 60371-3-9 Amend 1 © IEC:2007(E)

Page 13

6.3 Thickness

Replace the first paragraph of this subclause by the following new text:

The thickness when measured in accordance with 4.1.1 of IEC 60371-2 shall be within the

appropriate limits given in Table 3

7.1 Thermal endurance

Replace the first sentence of this subclause by the following new sentence:

This should be carried out in accordance with Clause 21 of IEC 60371-2

Page 15

7.2 Electrical strength

Replace the first paragraph of this subclause by the following new text:

When tested by the method of Clause 16 of IEC 60371-2 with electrodes according to 4.1.1.1

(25/75 mm diameter) of IEC 60243-1, the electrical strength shall meet the requirements of

Table 4

_

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